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Topic: Rubi 4.5 released
Replies: 21   Last Post: Jun 29, 2014 4:29 AM

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Nasser Abbasi

Posts: 5,686
Registered: 2/7/05
Re: Rubi 4.5 released
Posted: Jun 20, 2014 10:56 PM
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On 6/20/2014 9:05 PM, Albert Rich wrote:

> Version 4.5 of Rubi, the Rule-based integrator, is now freely available
>for downloading at http://www.apmaths.uwo.ca/RuleBasedMathematics


Thanks Albert for version 4.5 of Rubi.

fyi;

I tried it on the 3rd Charlwood which in previous Version
Rubi did not integrate,

http://12000.org/my_notes/ten_hard_integrals/inse3.htm#x4-30003

and was hoping it will now, so it can get 10/10, but
still difficulties show:

ShowSteps = False;
Int[ArcSin[Sqrt[x + 1] - Sqrt[x]], x]

Out[68]= (-x)*ArcSin[Sqrt[x] - Sqrt[1 + x]] +
Subst[Int[Sqrt[1 - x^2 + x*Sqrt[-1 + x^2]], x], x, Sqrt[1 + x]]/Sqrt[2]

ps. is it possible to make the default to be ShowSteps=False
instead of True? Most of the time one does not want to see the steps,
at least at first. Just as a suggestion.

Thanks,
--Nasser




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